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Commercial HVAC
Repairs & Maintenance

Based in Santa Rosa, we repair and maintain Commercial HVAC Systems for businesses across Sonoma and Napa counties.

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HVAC Repairs

We troubleshoot and repair systems with uneven temperatures, weak airflow or equipment that won’t start.

We work on Rooftop Units, Split Systems, Ductless, VRF, Fan Coils, Make-Up Air, Exhaust Fans and Kitchen Hoods in offices, restaurants, retail, hotels, warehouses, production buildings and winery tasting rooms.

HVAC brands we commonly service include Carrier, Bryant, Trane, American Standard, York, Lennox, Goodman, Daikin (including VRV) and Mitsubishi Electric, plus most other brands.

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Preventive Maintenance

Maintenance & Service Agreements are set around your equipment and operating hours, usually 2 to 4 visits a year depending on the equipment and how hard it runs. Visits cover filters, belts, coils, Compressors, refrigerant charge and Controls, plus Make-Up Air Units, Exhaust Fans, Humidifiers and Ice Machines where you have them.

Agreement customers get a separate 24-hour service line, preferred rates, a one-year parts and labor warranty on repairs and waived truck charges.

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Commercial HVAC Service Calls

Failed Rooftop Blower Drive

Problem: A Rooftop Unit’s blower Drive had failed. The customer had bypassed it to keep air moving and wanted a second opinion on replacing it.

Repair: We replaced the failed Drive, programmed the motor settings and control inputs and tested operation. On a later visit we added a Bluetooth display so the Drive can be checked from outside the unit.

Verified outcome: Rooftop AC back online during the repair visit.

Hotel AC Not Draining Condensate

Problem: A hotel’s AC was not working.

Repair: We found the Air Handler was not sloped correctly, so condensate could not drain. We adjusted the Air Handler and added a PVC union to the drain trap so it is easier to clean.

Verified outcome: Refrigerant pressures and superheat checked. Unit back online and working properly.

Winery Kitchen AC Lost Cooling

Problem: The kitchen AC had lost cooling.

Repair: An arcing electrical wire had burned a hole through the refrigerant tubing and released the refrigerant. We repaired the tubing, insulated the damaged wire, replaced the Filter Drier, pressure-tested, evacuated and recharged the system.

Verified outcome: Kitchen cooling confirmed during the repair visit.

Tasting Room AC Shutting Down

Problem: The tasting room’s AC was shutting down on high pressure.

Repair: We replaced a failed Condenser Fan Capacitor, cleaned the Condenser Coil and corrected the refrigerant charge. We then checked operating pressures and temperatures.

Verified outcome: AC returned to operation during the service visit.

Commercial Exhaust Fan Replacement

Problem: A Commercial Exhaust Fan needed to be replaced.

Repair: We replaced the Exhaust Fan, reconnected it to the existing electrical supply and tested operation.

Verified outcome: Replacement Fan tested for proper operation during the visit.

Restaurant Make-Up Air Unit Would Not Heat

Problem: A restaurant’s Make-Up Air Unit would not fire.

Repair: The pilot flame signal was weak. We installed an on-site spare Pilot Assembly and retested the unit.

Verified outcome: Heater fired, with the flame signal back within the required range.

A few of our clients

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Common Questions

What is included in commercial HVAC preventive maintenance?

It covers filters, belts, coils, Fans and motors, refrigerant charge, electrical connections, condensate drains and Controls, matched to each piece of equipment. Anything we find that needs repair is listed separately, so you can approve it first.

How often should commercial HVAC be serviced?

It depends on the equipment and how hard it runs. Most commercial HVAC needs 2 to 4 visits a year, set in your Maintenance & Service Agreement.

Should an older commercial HVAC system be repaired or replaced?

It depends on the unit’s age and condition, the repair cost compared with its value, how often it has failed, its refrigerant and whether parts are still available. We give you an honest assessment, and business customers can get a free second opinion.

Why is our commercial air conditioner not cooling?

Common causes are dirty filters or coils, a failed Condenser Fan Motor or Capacitor, low refrigerant from a leak, a failed Compressor or Contactor, a frozen coil from low airflow, or a thermostat or control fault. We find the cause before replacing parts.

Why isn’t our restaurant exhaust hood pulling enough air?

A slipping or broken belt, a failed Fan Motor or Drive, clogged grease filters, or too little Make-Up Air can all weaken capture. We check the Exhaust Fan, hood and Make-Up Air together, because fixing one side alone can push smoke and heat back into the kitchen.

Why is our commercial air conditioner leaking water?

It’s usually a clogged condensate drain or trap, a cracked drain pan, or a unit that is not sloped to drain. A frozen coil from low airflow or low refrigerant can also melt and overflow. We fix the cause, not just the puddle.

Request a Service or Quote

We’ll follow up to confirm the details and schedule a visit.

Equipment down or production affected?

After-hours service is for Maintenance & Service Agreement customers. Online requests are reviewed during office hours.

(707) 544-1277

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Commercial HVAC Repairs & Maintenance